A fluorine-containing ether compound of the present invention is represented by Formula (1). R1—CH2—R2—CH2—R3 (1)(In Formula (1), R1 is an organic end group having 3 or more carbon atoms which includes two or more polar groups with each polar group being bonded to different carbon atoms and the carbon atoms to which the polar groups are bonded being bonded to each other via a linking group including the carbon atoms which are not bonded to the polar groups, R2 includes a perfluoropolyether chain represented by Formula (3), and R3 is a hydroxyl group or R1) —(CF2)y−1—O—((CF2)yO)z—(CF2)y−1— (3)(In Formula (3), y represents an integer of 2 to 4, and z represents an integer of 1 to 30).
Legal claims defining the scope of protection, as filed with the USPTO.
3. The fluorine-containing ether compound according to claim 1 , wherein each of the two or more polar groups included in R 1 is a hydroxyl group.
4. The fluorine-containing ether compound according to claim 1 , wherein R 1 has an ether bond (—O—).
5. The fluorine-containing ether compound according to claim 1 , wherein R 1 is an end group of Formula (4), (In Formula (4), x represents an integer of 1 to 3).
6. The fluorine-containing ether compound according to claim 1 , wherein the compound in Formula (1) is represented by Formula (5), (In Formula (5), m represents an integer of 1 to 11).
7. The fluorine-containing ether compound according to claim 1 , wherein the compound in Formula (1) is represented by Formula (6), (In Formula (6), n represents an integer of 1 to 7).
8. The fluorine-containing ether compound according to claim 1 , wherein the compound in Formula (1) is represented by Formula (7), (In Formula (7), n represents an integer of 1 to 7).
9. The fluorine-containing ether compound according to claim 2 , wherein the compound in Formula (2) is represented by Formula (8), (In Formula (8), m represents an integer of 1 to 11).
10. The fluorine-containing ether compound according to claim 2 , wherein the compound in Formula (2) is represented by Formula (9), (In Formula (9), n represents an integer of 1 to 7).
11. The fluorine-containing ether compound according to claim 2 , wherein the compound in Formula (2) is represented by Formula (10), (In Formula (10), n represents an integer of 1 to 7).
12. The fluorine-containing ether compound according to claim 1 , wherein a number-average molecular weight is in a range of 800 to 10,000.
13. A lubricant for a magnetic recording medium, comprising: the fluorine-containing ether compound according to claim 1 .
14. A magnetic recording medium, comprising: at least a magnetic layer; a protective layer; and a lubricating layer, which are sequentially provided on a substrate, wherein the lubricating layer includes the fluorine-containing ether compound according to claim 1 .
16. A lubricant for a magnetic recording medium, comprising: the fluorine-containing ether compound according to claim 15 .
17. A magnetic recording medium, comprising: at least a magnetic layer; a protective layer; and a lubricating layer, which are sequentially provided on a substrate, wherein the lubricating layer includes the fluorine-containing ether compound according to claim 15 .
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
July 31, 2017
October 13, 2020
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